May weather forecast
Salalah, Oman

May introduces the intense summer period of Salalah, with remarkably high temperatures. This month witnesses a steady increase in both temperature and humidity from April. An increased UV index implies a palpable intensity in sunlight. Despite the escalating heat, the days stretch further. The pouring of 17mm (0.67") rain over a single day offers a refreshing break from the persistent high heat.

Temperature

Salalah's warmest month, May, generally records average temperatures ranging from a high of 32.4°C (90.3°F) to a low of 25.6°C (78.1°F).

Heat index

Throughout May, the heat index is computed to be a blistering 44°C (111.2°F). Stay mindful: Heat exhaustion and heat cramps are likely. Heatstroke could follow extended physical effort.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In Salalah, Oman, the average relative humidity in May is 75%.

Rainfall

In Salalah, during May, the rain falls for 1 days and regularly aggregates up to 17mm (0.67") of precipitation. Throughout the year, in Salalah, there are 37 rainfall days, and 131mm (5.16") of precipitation is accumulated.

Sea temperature

May is the month with the warmest seawater in Salalah, with an average sea temperature of 29.1°C (84.4°F).
Note: Surface water temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as ideal and highly pleasant for extended enjoyment in all water activities.

Daylight

The average length of the day in May is 12h and 56min.
On the first day of May in Salalah, Oman, sunrise is at 05:57 and sunset at 18:43. On the last day of the month, sunrise is at 05:49 and sunset at 18:53 +04.

Sunshine

May has the most sunshine of the year, with an average of 10.8h of sunshine.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index in Salalah. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index, 12 in May, converts into the following recommendations:
Employ all crucial safeguards, unprotected skin could burn rapidly. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Apply and frequently reapply a minimum SPF 30 sunscreen even on cloudy days, especially after swimming or an outdoor workout. Caution! The Sun's UV intensity grows with reflections off sand and water.